.mainContent{
  position: relative;
  margin: 60px 0 0;
  width: 100%;
  border: 1px solid transparent;
  overflow: hidden;
}
body{
  height: 95%;
}

.content{
  position: relative;
  margin: 20px auto;
  width: 1600px;
  min-height: 600px;
  border: 1px solid brown;
}

.single-line {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.double-line{
  overflow: hidden;
  text-emphasis: ellipsis;
  /* white-space: pre-wrap; */
  line-clamp: 2;
  -webkit-line-clamp: 2;
  box-orient: vertical;
  -webkit-box-orient: vertical;
  display: -webkit-box;
}
